Boob-operatihg mechanism



zranil?, 1928.

. Re, 16,850 P. R. FORMAN,

noon OPERATING MCHANISM Original Filed Jan. l1926 '7 Sheets -Sheet lo D: l L. j 1:1

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l Jan. 1 7, 1928.

P. R. FORMAN DOOR OPERATING MECHANISM original Filed Jam-,[1926 '7 sheets-sheet 2 wluuuunnnll /f /j Jan, 17, 192s,

, Re, 16,850 'P. R. FORMAN DooR`oPEaAT1NG MECHANISM I original Filed Jan. 192s 'r sheets-sheet 3 7 Sheets-Sheet 4 Jan. 17, 1928.

P. R. FORMAN DOORA OPERATING MECHANISM Original Filed Jan.6. 1926 www Y NW o Jan.17,192s. R,1s,s5o

P. R, FORMAN v DOOR OPERATING MECHANISM original Filed Jams. 192s Snvmtoz 1'7,``928'. Re. 16,850 P. R. FORMAN DooR OPERATING MEcHArgIsM Original Filed Jan.e. 192e 7 sheets-Sheet es Snom/tor Jim. 17, 1928.

Re, 16,850 P. R. FORMAN l D OOR OPERATING MECHANISM original Filed Jams. 1926 7 sheets-Sheet 7 @5% A HIOMMMS Rossued Jan. 17,1928.

U-N-lrsa -sri.

PARIS n. FORMAN, or RAHWAY, NEW .ma

COMPANY, or New Yonx, N'. Y., A

sEY, nssIeNoR To NATIONAL rNEuMATIC CORPORATION or WEST VIRGINIA.`

DOOR-OIEEATING MECHANISM.

Original No. 1,601,732, dated October 5, 1926, Serial reissue tiled November 1,

This invention relates to door operating mechanism and more particularly to such mechanism as is employedon passenger vehicles, such as street cars, busses, subways, and elevated cars and the like.

The Vobject of the invention is to provide mechanism of the foregoing type which 1s simple in structure, economical of manufacture, installation and maintenance, and eiicient in operation. t

A. further object of the invention 1s to pro- Vide a door operatin apparatus which may be.. conjointly contro led by the motor-man, conductor, or the like. 4

Further objects of the inventionv will appear more fully hereinafter.

The invention consists substantially in the combination, location and relative arrangement of parts, all as will be more fully described hereinafter and as shown by the' accompanying drawings and' finally pointed out in the appended claims.

Referring to the drawings:`

Fig.

1 is a fragmentaryview 1n side eleva'- tion of a car end showing equipment -embodying my invention. y

Fig. 2 is .a top plan View of the same. Fig. 3 is an enlarged detailv view inl topv plan of the brake control equipment of the car.

Fig. 4 is a frafrmentary view in side elevation of the skelneton equipment er'nbodyngmy invention. I

' Fig. 5 is an enlarged detail view oi the same. y

Fig. 6 is a top plan View of theV door engine and apparatus shown in FigureI 4.

Fi 7' is an enlarged View ofthe treadle plattorm employed in accordance with my invention.

Fi". 8 is a plan view of the motormans interlocking door control equipment.

Fig. 9 is a sectional View taken in the line 521-2, of Figure 8, looking inthe direction rofthe arrows.

Fig. 10 is a view in same. q

Fig. 11 is a plan view of the valve seat.

Fig. 12 is a plan view of the valve.

Fig. 13 is a plan view of the valve head superposed on its seat with dotted line indications of the respective positions of the valve. 4 y

Fig. 14 is a fragmentary enlarged view front elevation` of the No. 79,596, led January 6, 1926. Application for 1926. Serial No. 145,676.

similar in side elevation and similar to Figure 1 of a modified arrangement embodied in my invention.

Fig. 15 `is a Sectional View taken on the `line, 9 9, of Figure 14, and looking in the direction of the arrows.

Fig. 16 is a skeletonview in side elevation ofthe modified construction.

Fig. 17 isv an enlarged detailed view in plan of the same. i

The same part is designated by the same reference character Wherever it occurs throughout the several views.

In passenger vehicle operation efforts have been madein practicallyevery department to reduce operating expense, particularly by the elimination of all unnecessary employees. As a result thereof, so-called one man cars have been developed wherein the single em-v ployee acts as conductor and motorman. l/Vth the elimination of thcconductor, the duties oi' the motorman have correspondingly increased, so that While theretofore the sole duty of a motorman was to control the progress ofthe vehicle, in one man ycar equip- I ment, the motorman must in addition thereto control the doors, make change and collect all fares'. Inasmuch as theretofore lthe vsafety of passengers in boarding and alighting from the car was largely under the supervision of the conductor, the addition of the normal duties `of :theconductor to the inherent duties of the motorman had ua great tendency to slow'up the scheduleA of operawith respect to and-disregard for the safety of the .passengers Withthe inevitable accidents, consequent loss of time and expense.

As a result efforts have been directed to make vthe total number of duties ot the one man operation of the vehicle as light as possible and more or less automatic and to interlock the various operating controls under his mauipula-tionfso that safety isinsured tion of the vehicle, ordeveloped carelessness at all times while at the same time speed of operation is maintained. .1

One development has been the `so-called treadle equipment, Where a. depressible platform and treadle has been provided tor controlling the door actuation, so that when a passenger desired to leave the vehicle when vthe same had been brought to rest, the passenger by walking on the treadle would automatically open the door.

providing safeguals-itg'reiflentaccidental opdnxig e the door when the car ovlvehicle is in motion theV .and the treinely expensive and icomplica'te apparatuscwasznes'sitated and the cost of manu,-

.factu're and expense of installation. was such esto make theadoption of the :system prac- L' v 1s likewise 1n contact with an angle plate35 tically'prohibitive.

It is among vthe special purposes of my V fn'esnt inventianitoz-.provide equipment of this nature .ofgsaeh simplicity and minimum of4 parte, but-nevertheless with rggedness and durability and practically no expense of tenan'kceg-as to `"render commercially Y pnmal @SM1-.0f this nature with all if vits ncident advantages Y Which-.show one form of .cvoihed sprin the step `ine end-.M- othe spring? IBl-i's connected to'the "bearin'g A12 and the''other end. 15 exerts a' which.. theV .#Referringnow to Figures 1 to 7, inclusive, neumatic treadle contolandmore partie arly to Figure .1,

"the forward; end oil-a street car is shown at 1.51.2512. are the :folding doors operable by the usual andr Well known door engine 3 .tlnaaxzghV xthevertical shaft 4. yThe right handidoor2 is rigidly attached by the plates 4 encircle itto shaft 4. The left hand dolor 21S-hinged tothe| right hand door 2 as atti. 1The motormans door control. valve sharm in general at?. :The Vffmward door. 2 isguidedat the hottombythe plate and *59112 the 1101i'. rod; is mounted .in thehearingsdiaupported the frame of the car.

--.-: 'rotate downwardly: a in'stthe ac- `13W hztends to One ly at 19.

' Y Referring to Figure 2, the treadle-mecha- 'nism' isgshnwn enlarged. 2() is an opening theledges ofy-,whichare angle irons f .an minne the opening.' In the opening Atlfealxlle'plnte 221m the shaft The shaft plata is lfree tofzrotate. 23 is mounted in lthe angle iron 21; On the .under side of plate 22 is'v riveted an angle E iron 24 extendngftrsnsversely across it.- By -ffarranement is apparent that the i at itsorward end. lllluiunedwtilJyixade'rthe plate, appraxmate- AStatthe O-Nahl?. Inequip-Av mem? 0f this Daf-Ure heretofore pro osed ex-` powercontrolas shown generalprojectin *(.p'I-ltel'` and extending transversely depressed by reasonof a passenger Astanding onit, the free end 31 of. lever 25 is depressed .bemin contact with the angle plate 32 at 33 igure 7). The lfree end 34 of arm 26 attached .tol the under side of the treadle plate 22. Thus the ball and socket joint 26.

will be raised `'against the action of the sprin 29 whenever plate 22 is depressed. v

The ree end 31 is pivotally connected` to a link 36 at 37 (Fig. 5). The other end of link 36 is pivotall connected toa rotatable link 38 at 39 whic is mounted on a bracket 40 for rotation. The bracket 40 being rigidly fastened to' the car framev 4l, a vertical rod 42 is pivoted at the center of the link 38 at 43. The rod 42'is movable' vertically in thestanchion The upper end of rod Uil 42 is rigidly attached to plate 45 (Figure 4) y which controls the'needle valve of the door engine in the usual manner. This permits the operation of theV door engine when the motormans valve7 is in brakes applied position, as will be hereinafter described.

Referring `now to the extension 17 on the arm 10 of the door step, it is seen in Figliresy 4 and 5 that the arm 17 forces the VBy this arrangement, it will-v be seen that when the last passenger leaves the plate 22 and stands on the step the arms 25 and 26 will remain in Atheir displaced upward position causing Lthe rod 42to hold the needle valve open sothat the vdoors willv remain open `until the step is cleared.

Mounted-on the engine rotatedvrtical shaft 4 isa short armV and collar 52 to which 'i'sfpivotally attached the arm 53 at 54.

Rigidly secured to the frame of the car, and under the floor is the bracket lwith two arms 56 ,through which a shaft 57 exten' S. Secured to the shaft 57 for rotation with it are two arms y58 and v59 to the former of which is pivotally .connected the link rod 5 3 at 59. Pivotally connected to the arm'59 is another link rod 6 0.. The Other end of rod 60 is attached to Ia, short link 61 at 62 and said link 61 being attached toV a'collar 63 secured to step shaft 11. 4

e operation of the devlce will now be',

'end .18 oflevers46 upwardly, thus depressying 4the free end 47 downwardly about the given. The motormans valve is assumed to be in brakes applied and dooropening position. When a passenger signals his desire to get off the car, he proceeds tothe door and stands on the floor plate 22. The motor- 'man stops the car sets the brakes at the car station with the result that the operation of the doors is controlled by a passenger or passengers wishing to leave the car. The

late 22 is depressed at its forward end causingthe ball and socket joint 28v to rise ivot 48.

against the action of spring 29, and causing the free end 31 of arm 25 to rotate down: wardly about the axis 27. This forces link 38 downwardly about the pivot in bracket 40 carrying the rod 42 and its attached plate 45 with it. This causes the needle valve 64 to operate the control valve 65 which in turn admits air to the door engine 3 causing the piston to move and with it the crank 66. link 67 and crank 68 which is fastened to the vertical shaft 4.` Shaft 4, therefore, rotates causing the doors to open. Asthe doors are opened by the rotation of shaft a 4, the rigidly attached collar 52 rotates with it forcing rod 53 back. Since rods 53 and 60v are rigidly attached to the shaft pin 57, arm 59 moves backward with arm 58 drawing rod 60 with it and rotating shaft 11 throu h the agency of the arm 61 and collar 63. e step is thus rotated to a horizontal position by the time the doors are open. The passenger then alights on the step which maintains the door engine in its door *opening lposition by forcing the free end 47 of lever 46 downward through the pressure exerted by arm 17 on arm 18 which is the other end of lever 46 rotatable about the Rod 49 is pulled downward by ree end 47 and carries with it free end 34 of lever 26 by reason *ofl their attachment at 51. This has all happened as the door and step were operated and is thus maintained when the passenger is on the step.

When the step is cleared the spring 31 tends to raise the step and spring 29 depresses the ball and socket joint 48 causing a reverse operation of rod 42 and needle valve 64 so that air is led to the other side of the door engine piston which closes the door and step.'

the operation ofthe doors through thetreadle or independentlyA thereof as desired. As has been briefly described and as shown in Figure 2. the valve 7 is associated with the pneumatic brake valve 19 and is specifietllyl shown in detail, Figures 8 to 13, in-

cap nut 25.

elusive. The valve itself is composed of a main body portion 2 having an extension 3. Thebody portion 3' comprises the frame 4 on which is mounted the horizontal extension 5 extending rearwardly thereof. Vithin the extension 5 is a chamber 6 which houses a piston 7 having a series of leather discs 8 mount-ed on a stud 9 and held thereon by means of a nut 10. Onthe other face of the piston is a projection 11 having a reduced portion 12 with a conical end which protrudes through the end wall 13 of the chamber. A spring 14 encircles the extension llbetween the piston 7 and the end of the chamber 6. A threaded plug 15 is screwed into the open end of the The flat surface to receive a handle 18 to be operated thereby is encircled by a coil spring The spring 20 is within a housing 2l which slips on to the stern 17', between the portion 4 of the valve and the handle 18 and has its ends 22 bearing against the main body portion 4, of the valve. casing 21 turns with the stem 17 and car-v ries one end of the spring 20 with it-in accordance with the directionin which the stem turns while the other end bears against the body portion 4. Thus, the 'spring resists any effort to turn the valve stem in either direction and maintains the valve The spring sie handle normally in its central position indicated at B in Figures 11 and 13. y l

The valve seat 23 is formed on the lower surface of the main body portion 4 which is threaded at 24' to receive a threaded cap nut 25. which is forced against a washer 26. The valve head 27 is forced against the valve seat 23 by means of a spring pressed thimble 28. This thimble projects through an opening inthe wall 30 of the The stud 31 is made with a cavity 32 into which a threaded plug 33 is screwed. The spring 34 rests against this plug at one end and within the thimble at theother. Thus, it is evident that the thimble isslidable in the wall 30 of the cap nut and forces the valve head 27 against the valve seat by means of spring 34.Y The port 16 communicates through the passagev 36', 37 with the chamber 38. formed by the cap nut 25. A threaded opening 39' is provided in the valve body tohave screwed thereinto a. pipe 39 (see Fig. 2) communi eating with the brake cylinder so that when brakes are applied fluid pressure is supplied from the brake cylinderto port-opening 39.

`and flows through a passage 40 to port 41 opening in the valve face 23. A similar threaded opening 42 1s screwed thereinto, a

llo

pipe 42a (see Fig. 2) which conducts fluid y pressure therefromv to the port at 42 of the valve puller lof the. door engine (see Fig. 6).

Within the valve body theport opening 42 I i is connectedwith the port opening 43' b v a passage. Another threaded open1ng48 is adapted vto have screwed thereinto the end of pipe line# 1&2V (see Fig. 2). whichk termi- Vnaties-in the pipe l148 (see Fig. 6) leading tothe ivalve puller of the door engine.. The openingy48i' .is connected with the port 50' by means fof a passage 49'. A passage 51 at right angles to passage 49' leads to the atmosphere and-isthreaded at its outer end asis indicated.

Referring now vto the lvalve operation which is best shown in Figures 1v1, 12 and 13,5. the valve -head has two semi-circular grooves-52' and 53' -in its face. groove54 leads radially into groove 53'. p

In the other views as has been pointed out with reference to Figures 2, and 13,tl1ere are j opening 4s?, pipe isEL (see Fig. a) to pipe 14s three positionsfor the door control valve head. L When the valve is inV the position shown indicated at C in Figures 2 and 13 airundert pressures-enters opening 39', and then travels through passage port opening: 41', groove '52', passage' 49', threaded (see Fig. 6) toithe valve. puller of the en, gine vto open'thc' door. It will be noted, however, that this passage to the door engine is'in back Aof the needle valve, so that there is thus afforded to the motor-man means for opening the door wholly independent of the treadle equipment.

- When the'l lever 18 is moved to position A .and the brakes are applied {iuid pressure 'flows through opening 39', at 39 (see Fig. l9..')1-:passage 40',l port 41', groove 52', port `4.3", passage 44', opening 42'. chamber 38',

v i 'and thence to thel pipe' line 142 to the valve '.pllerfonthewdoor engine. The Huid pres-.5

sureV is here blocked, however, because of the needle valve the valve uller ybecomes operative only lwhen `the nee evalve is depressed due to the presence of a passenger onA the Atreadl'e. Ifthe passenger is on the treadle and the needlevalve depressed then and only in that event -will the valve puller ofthe engine' beoperative. `and the engine actuated. As heretofore explained actuation of the door lrnotor in each instance requires that the 'brakes beapplied inasmuch as the fluid-pressure is derived from the brake eylinder through the pipe-:line 39 onl'ywhen the brakesare' applied. The fluid pressure supplied tothe valve holds the valve handle in its displaced position, against the action of the coil spring 20. As soon as the fluid pressure is released (i. e. the brakes are ref leased) the spring 20' 4causes the valve handle 18' to move back `toits normal position indicated at B in Figures 2 and 13,thereby causing the door engines to actuate the doors .toelosed I$1011. y i' y 1It vwill seen from the foregoing that I :have supplied agi-exceedingly simple and 'elcient arrangement for eiect-n'g simple Another l treadle and motorman control of the door apparatus requiring a minimum' of parts.

In installing the equipment of this nature on certain typesof cars great dilticulty is met with in getting around the normal obstructions, ordinarily locatedV beneath the car and finding adequate space for the additional equipment necessary for treadle operation. v

. For this reasonI have shown and will now describe a modified arrangement wherein any obstructions beneath the car cause no diiliculty inasmuch as the operating equipment is located all in alignment with the vertical edge` of the car with the exception of two operating rods, the location of which'may' be altered to meet the necessity or desir -abilit Re erring, therefore, to Figures 14 to 17; as before the usual door engine 3 is mounted overhead and operatively connected to the verticaldoor opening shaft 4 mounted in bearings and attached to the doors 2, 2, byv

the plate and collar 5. The doors are hinged at 6, and are guided by the roller and plate 8 at the bottom. The step 9 is supported on arms 10, 10 fixed for rotation with horizontal shaft 11 in the frame bearings 12. The spring 13 is mounted on shaft 11 and is fastened tothe bearing 12 at 14 and at the other end to arm 15 attached to the bottom side of the step 9. This spring opposes the Idownward action of step 9. The rear ends of arms 10 project for-a short distance as at 69 andare jointed by bar 7 0 bolted to them. At

the center .of this bar is a spring pressed bolt 71 for a purpose which will appear. later.- A spider 72 is bolted tothe outside face 7 3Lof t e knee .of the'platform at 74, 7 4, which acts.

as a support for the levers 75,76 ypivoted at 77, 78 respectively. The ree'ends 79, 80 of vlevers and 76 are pivotally jointed to two vertically movable rods 81, 82 which are pressedY upwardlyby springs 83, 84, held between collars 85, 86 and the spider, and which are in contact with the floor treadle 22 on the under side. The plate or'treadle 22 is inlaid flush with the Hoor within an opening 20 framed -by angle irons 21, said plate being Apivoted as before near the rear end. The levers 75 and `76 are pivoteol together at ther inner ends at 87 and also pivoted at 87 is a depending bar 88 which slides in a guide 89 on the' lower end of the spider. The lower end of bar 88 contacts with the bolt 71 when vthe step is down for a. purpose which will appear later.

Extending longitudinally ofthe plate'22 on its underside is an angle iron 90y which contacts with lever 91 when the plate is pressed. Thelever 91l is pivoted at the left end at 92 inal hearing mounted on the car frame. The rod 42 is' pivotally connected at 931:0 the free end of lever 91.

e The operation .is similar to that previously When the motormans valve is in akes applied positionand the door valve is in its A position, the Weightof the passenger `dfblllresses the forward end of plate 22 which bai:;88 up with them. The same depression of late 22 carried angle iron 90 down against lever 91, forcing its free end down pulling rod 42` down with it.Y The door eiigineoperates as before, opening the doors and stelp in exactly the same manner as described be o re. When the step is all the Way down, the bolt 71 contacts With the lower end ofthe bar 88to hold the joined ends of levers 75 and 76 upwards when the passenger transfers his Weight from the plate 22 to step 9.

. The important feature of the modification is the compactness of theparts used and the simplicit of the mechanism. Also there are practical y no parts under the car floor since they are all mounted on the knee of the platform. p

Many modiications and changes in detail willl readily appear to those skilled in the art without departing from the spirit and scope of my invention as defined in my claims.

Having now set forth the objectsand nature of my invention and having shown and described fthe structures embodying the features thereof, what I claim as new andiiseful and of my own invention and desire to secure by Letters Patent is .1. In a. vehicle, entrance and exit Ways, barrier means in said ways, means operable by a passenger for opening said exit barrier comprising a hinged treadle plate depressible by the Weight ofa passenger, and pivoted levers depressible by the treadle plate, said levers being connected by their inner end by a ball and socket joint, said levers being operable to energize said door opening means. 2. In a vehicle, entrance and exit Ways, barriers for said ways, means for opening said exit barrier, a treadle plate, pivoted levers mounted under said treadle with the inmer ends joined by a ball and socket joint, the

free `end of one of said levers being connected ,'to' a pivoted arm, a step, and means on said step whereby said arm maintains the ball and socket ends ofthelevers raised when the pasi 1 senger leaves the treadle i step, and means operable by the presenceof a j i mi rier opening means.

passengeron said stepfor retaining said bar'- rier open when the passengerzleaves said bar- ,4. 'In a vehicle, entrance and exit ways,

barriers for said Ways, means operable by the weightof a passenger for openingl said exit n barrier; a'step, said barrier opening means' becoming eective when the brakesare applied, `means for maintaining said barriers open operable by the step', and means for returning said barriers to closed position when the step is clear.

5.A In a. vehicle, entrance and exit ways, barriers for said Ways,'a hinged treadle plate, pivoted levers under said treadle, said levers being joined by their adjacent ends by a ball and socket joint, means `operable by said` 'treadle for raising said ball and socketfjoint,

a step, means for maintaining said ball and socket joint raised` operable by said step, means operated by said levers forfadiiiitting fluid pressure to said barrier openingmeans and means to return said vbarrier means to closed position when the step is cleared.

6. In a vehicle, entrance and exit Ways, barriervmeans for said Ways, a step, means for opening and closing saidbarriers and step, meansoperated'by the act of a pas` senger for opening said exit barrier and step comprising a treadle plate, ball and socket jointedpivoted levers under said treadle, means operated by said levers for operating said barrier opening means, when the brakes A y Aare applied, and means for closing said barriers and step when the step is-cleared.

7. In a vehicle, entrance and exit Ways, barriers for said Ways, means operable by an act of a passengerwhenthe brakes are applied for opening and closing said barriers,

. means operable by the motorman for opening and closing said barriers When the brakes are applied, said'passenger opening'means comprising a hinged treadle plate', pivoted levers depressible at their outer ends by said treadle for operating'said barrier opening and closing means, a step `and `means operated by said step for retaining said barriersopen When the treadle is cleared.

8. In avehicle, entrance and exit lWays,

'riers comprising a treadle plate, Aa spider under said treadle, pivoted levers on said spider, said levers being pivoted together at their inner ends, land means operated' by thc depression of the treadle for raising the in` ner ends of said levers Wherebythe` barrier operating means is energized.

9.` Ina vehicle having entrance and exit Ways, barriers` for said ways, means fo'r'operating said barrier" operatingv means, a treadlevplate, a spider mounted under said treadle, levers pivotedon saidspi'der.` said levers pivoted lat their inner ends, afgiiide in vsaid spider, apivoted arm depending from said levers, a step, said treadle plate being so .arranged that the Weight of a passenger` depresses the outer end of said pivoted le- .vers, and means on said stepcooperating with said `depending armsforvmaintaining .the outer ends ofsaidfpivoted `levers depressed when a passenger transfers ,his 

